Heating systems



April 16, 1963 G. A. WEIMER 3,085,564

HEATING SYSTEMS INVENTOR.

GERALD A. WEIMER TTTTTT EY April 16, 1963 G. A. WEIMER 3,085,564

HEATING SYSTEMS Filed Oct. 15, 1960 s Sheets-Sheet 2 INVENTOR. GERALD A.WEIMER 29' 2 BY gugwtw ATTORNEY April 16, 1963 Filed Oct. 15, 1960 G. A.WEIMER 3,085,564

HEATING SYSTEMS 3 Sheets-Sheet 3 GERALD A. WEIMER ATTORNEY United States3,085,564 HEATING SYSTEMS Gerald A. Weimer, Decatur, Ga. (214 Peeke Ava,Kirkwood 22, Mo.) Filed Oct. 13, 1960, Ser. No. 62,358 12 Claims. (Cl.126-121) This invention relates to heating systems and is moreparticularly concerned with a combination fireplace and central heaterfor installation in a multiroom dwelling.

In the past, fireplaces have been extensively employed in all sizedwellings and until recent years these fireplaces formed the main sourceof heating the dwelling. :Recently, however, central heating systemshave displaced the fireplaces which now serve more as ornamentations forrooms than as constant sources of heat during cold months. Thus, in themodern dwellings which are provided with fireplaces, the fireplace isused only intermittently, mainly for the purpose of adding ornamentationto a particular room.

When such fireplaces are used, the heat from the fire therein is veryinefiiciently distributed in the room, mainly by radiation and to alimited extent by convection, with a substantial amount of the heat,generated by the fire, leaving the room through the chimney of thefireplace. The heat that is distributed to the room tends to unbalancethe central heating system of the dwelling by actuating the thermostatbefore other rooms are adequately heated if the thermostat is locatedclose to the fireplace and by overheating the particular room in theevent the thermostat is remotely located with respect to the fireplace.

Usually, the central heater or furnace of a modern heating system islocated either in a basement or in the attic of a dwelling where it isnot readily accessible, even though the size of the furnace does notpreclude other locations. In such instances, separate chimneys, fiues orstacks for the fireplace and furnace are required.

The cost of installation of separate fireplaces and furnaces is usuallyrelatively high which persuades increasing numbers of people buildingcheaper homes to forego the relative luxury of the fireplace, eventhough in times when natural gas and electrical service are interruptedto the home, the fireplace may present the sole means of even partiallyheating a house.

To obviate the above problems I have devised an inexpensive dual heatingunit which includes both the fireplace and a heating furnace operatingin conjunction with the conventional ducts for circulating theheated airthroughout the entire dwelling. Briefly, my heating system includes ahollow cabinet or closure divided into a plurality of compartments. Inthe central compartment is a fireplace having a stack in the upperportion, the stack leading to the exterior of the building. The stackserves as a first preheater zone for incoming cool air leading from thereturn ducts. In the lower portion of the central compartment behind thefireplace are a plurality of battles which define channels forming asecond preheating zone. For circulating the air from the firstpreheating zone to the second preheating zone, a blower is located in anouter compartment of the cabinet, the intake of the blower communicatingthrough a vertical partition with the first preheating zone and thedischarge or exhaust of the blower communicating with the channelsformed by the baffles.

Opposite the blower and communicating with the channels of the secondpreheater is a furnace which heats the air and discharges the same to aplenum chamber or manifold whence the air is distributed via the heatingducts to the various rooms.

Accordingly, it is an object of the present invention to provide aheating system which is inexpensive to manufacture, easy to install inexisting buildings, durable in structure, and eificient in operation.

Patented Apr. 16, 1953 Another object of the present invention is toprovide a heating system which provides, in a compact structure, afireplace and a furnace, each of which may be utilized separately forthe heating of air distributed throughout the dwelling or which may beutilized in conjunction with each other for that purpose.

Another object of the present invention is to provide a heating systemwhich requires no basement or attic to accommodate the system and is soconstructed that it may be installed in the central portion of a roomand thus may form a part of the partition of the room.

Another object of the present invention is to provide a heating systemhaving a fireplace wherein the heat from a fire in the fireplace may bemore etliciently utilized for heating a dwelling.

Another object of the present invention is to provide in [a heatingsystem a furnace which is readily accessible for inspection and repairand a blower which may be easily and quickly removed, if desired.

Other objects, features and advantages of the present invention willbecome apparent from the following description when taken in conjunctionwith the accompanying drawings wherein like characters of referencedesignate corresponding parts throughout the several views and wherein:

FIG. 1 is a partially broken perspective view of a heating systemconstructed in accordance with the present invention.

FIG. 2 is a cross sectional view taken along line 2-2 in FIG. 1.

FIG. 3 is a cross sectional view taken along line 3-3 in FIG. 1.

FIG. 4 is a perspective view of one of the bafiles of the heating systemshown in FIG. 1.

FIG. 5 is a cross sectional view taken along line 55 in FIG. 2.

FIG. 6 is a schematic wiring diagram of the electrical circuit of theheating system shown in FIG. 2.

Referring now in detail to the embodiment chosen for the purpose ofillustrating the present invention, it being understood that in itsbroader aspects of the present invention is not limited to the exactdetails herein depicted, numeral 10 denotes generally a cabinet which isa hollow, upright substantially rectangular member provided with a lowercentral opening 11 and mounted on a bottom plate 12. The bottom plate 12extends forwardly beyond the cabinet 10 to provide a hearth below and infront of the opening 11. Above the opening 11 and extending forwardlyfrom the front of cabinet 10 is a mantel 16-.

The cabinet 10 includes a plurality of spaced, vertically disposed,transverse partitions 18, 19, 20, and 21 which are spaced apart alongtheir back edges by panels 22, 24 and 26 of cabinet 10. The side plates18 and 21 are each turned inwardly at their vertical edges to formreverse flanges, such as flange 28. The front of cabinet lit includes anupper wing panel 29 disposed between partition 19 and flange 28 ofpartition 18. Wing panel 29' is turned inward to provide matchingflanges 30, and bolts, or the like, are passed through the flanges 30and 28, and flange 30 and plate 19. A lower wing panel 31 is providedbelow panel 29, and is similarly formed, but is not permanently secured;rather, the panel 31 is held by Rear panels for all sections aresimilarly constructed, and are all permanently secured.

in PEG. 3 the mantel 16 is formed of sheet material and has a topplatform 17 and front and back downwardly turned flanges 23 and 23a. Theback flange 23a is bolted to the front of the cabinet 16} by bolts 25.The bolt may be in the form of permanently installed studs in panel 35which project through appropriate apertures and are secured by nuts 25'.

In FIG. 2, it will be seen that the outer compartment is divided byvertically spaced horizontally disposed plates 38 and 38 to form ablower chamber 39. The blower chamber 39 houses a blower 40 whichdischarges to an elbow duct 41 through an opening in plate 38. Blowercompartment 39 is provided with an opening through partition 19 overwhich is a filter 44. The edges of horizontal plates 38, 38 are coveredwith strips 42 of rubber, or the like, which act as a gasket to seal thecompartment 39. The duct 41 communicates with center section 33, to bediscussed in detail hereinafter.

The blower 46 may be mounted on plate 38 for easy removal by hold-downstrips 43 which overlap flanges 42a on the blower. The electricalconnection may be of a plug-in type so that the entire assembly may beeasily removed for servicing. A gasket 47, along the periphery of theblower opening, seals the ducts and precludes the necessity of apermanent connection to the duct 41.

The other outer compartment 26 is provided with a horizontal plate 45which divides compartment 26 into upper and lower chambers and alsosupports, in the upper chamber, a conventional space heater 46. Theheater 46 may utilize gas, oil or electricity, as desired, and may beinstalled similarly to blower 49 so that it may be easily and quicklyremoved. Below the plate 45 is a duct 48 in the lower chamber, the duct48 providing a passageway between the lower portion of the centralcompartment 33 and the intake of the space heater 46. Above the spaceheater and mounted thereon is a plenum chamber of manifold 49, themanifold 49 projecting above and out of the compartment 26. A pluralityof hot air ducts 50 are connected to the manifold 49 and are adapted todischarge the hot air from heater 46 via manifold 49 to the variousrooms of the dwelling to be heated. The flue pipe 51 of heater 26extends upwardly and is bent inwardly discharging into an intermediateportion of the central stack s. Room air can directly be supplied to theheater 46 bypassing the chamber 33, if desired. This room air issupplied directly to the heater 46 as it passes through a grill g in anappropriate opening in partition 21.

As best seen in FIGS. 2, 3 and 5, a horizontally disposed metal plate 52is provided in the lower central portion of the central compartment 33,the plate 52 extending from the lower edge of front panel 35 inwardly tothe central portion of panel 24. In the forward central portion of theplate 52 is an opening 53 which may be closed by a damper plate 54hingedly secured by a hinge 55 to plate 52. The damper plate 54 iscontrolled by a lever 56 which is pivotally carried by a transversechannel member 57 extending below and supporting the forward end ofplate 52. The lever 56 is provided with a link 53 pivotally connected tothe damper plate 54 whereby rotational movement of the lever 56 willlift or lower the plate 54. Below the opening 53, there is a downwardlyand inwardly projecting wall 60 which terminates in a verticallydisposed lower wall 61, the walls 68 and 61 forming the back of thefireplace 11. The sides of the fireplace are formed by verticallydisposed inwardly tapering side walls 62 and 63, the inner edge portionsof which connect to the edges of walls 60 and 61 while the outer edgeportions of which are connected as best seen in FIG. to the channelmembers 36, 36', respectively.

Above the plate 52 and surrounding the opening 53 is an upstanding fiuemember formed by front and back wall members 64 and 65 which arearranged parallel to each other and inwardly and upwardly tapering sidewall members such as member 66. The upper end 67 of the flue member isprovided with a central opening communicating with the lower end of anupstanding stack s which projects outwardly beyond the central openingin an intake manifold 69 to which the return air ducts 70 are connected.In more detail, the intake manifold 69 is mounted on angle irons such asangle iron 69. arranged around the upper edge of the panels andpartitions forming the upper end of the central compartment 33.

Below the flue member and behind the fireplace walls 60 and 61 is asecond wall 72 which extends from the bottom plate 12 to the plate 52.Thus is provided a secondary preheater chamber 73 communicating on oneside with duct 41 and on the other side with duct 48. Within the chamber73 are a plurality of lower baflles 74 disposed horizontally betweenwall 61 and wall 72. Each baffle 74 is constructed, as best seen in FIG.4, with a plurality of spaced openings 75 formed by upwardly bentlouvers 76. Each louver 76 is connected to its baflle 74 along a bendline 77 and projects upwardly at an angle therefrom. Above the lowerbafile 74 are a plurality of intermediate baffles 78 which projectbetween wall 60 and wall 72, the baffles being arranged parallel to eachother at an angle extending upwardly and rearwardly. Above theintermediate baflles 78 are a plurality of wider baffles 79 which arearranged parallel and above the baffles 78. All of the bafiles 74, 78and 79 are provided with openings, such as opening 75, and louvers, suchas louvers 76.

The louvers 76 open toward the duct 41 so that air fed by duct 41 intothe secondary heating chamber will be placed in turbulence so that agreat portion of the air contacts the relatively hot walls 60 and 61 andare heated thereby.

Referring now to FIG. 6, it will be seen that the motor 80 for theblower 40 is connected to line current by wires 81 and 82 across anormally open switch 83 of a relay having a coil 84. The solenoid valve85 which supplies gas to the space heater 46 is controlled by a solenoid86 which is adapted to be connected to the secondary coil of atransformer 87 via wires 88, 89, 90 and 91, across a normally openswitch 92 of a relay having a coil 93 connected in series with thethermostatic switch 94 across wires 88 and 91. The relay coil 84 isconnected in series with an on-off switch 95 across wires 88 and 91,while the other on-olf switch 96 is connected in parallel with a switch95 of the relay actuated by coil 93. Thus, when the thermostatic switch94 is closed, energizing the coil 93, switches 92 and 95 are closed,thereby completing a circuit to solenoid 86 actuating the solenoid valve85 so that the gas will be supplied to the heater 46. As the switches92, 95, are closed, a circuit will be complete to the solenoid 84,closing the switch 83 and thereby energizing the motor 80 which willactuate the blower 40. By this arrangement, gas will be supplied to theheater 46 simultaneously with the actuation of the blower 40. Further,when the thermostatic switch 94 is opened, the blower 40 and the valve85 will simultaneously be shut off to deactuate the heater 46 and theblower 40. Nevertheless, the blower 40 may be actuated separately by theclosing of switch 96 which energizes coil 84 and closes switch 83without valve 85 being opened.

In operation, the system of the present invention is in stalled in ahouse adjacent one wall thereof, and the ducts 50 and 70 are connectedrespectively to the hot air outlet openings in the various rooms of thedwelling and to the air return openings in the conventional manner.Under normal circumstances with no fire in the fireplace 11, thethermostatic switch 94 will actuate the valve 85 and motor 80simultaneously so that air will be drawn by the blower via ducts 70 intothe central chamber 33 forming the first preheating zone of the system.The air circulates around the stack 52 and the flue member therebelowand is moved into the chamber containing the motor 40 through the filter44. If a fire is in the fireplace 11, the heat from the fire will heatthe flue member and the stack 52 and hence the incoming air will bepreheated in a first preheating zone before it passes into the chambercontaining the blower 40. The blower 40 passes the air through duct 41into the secondary heating zone defined by chamber 73. The baflies, suchas baffles '74, will cause turbulence in the incoming air and cause theair to contact the walls 60 and 61 during its travel through chamber 73so that if a fire is in the fireplace 11, the incoming air will be againheated before being discharged to the duct 48. Since the baifles 74, 73and 79 are in contact with walls 60 and 61, they too, will be heated toimpart heat to the air. From the chamber 73 the air is discharged intoduct 48 and thence into the heater 46 whence the air is heated anddischarged into the manifold 49 for distributing via ducts 50 to thevarious rooms.

It will be obvious that if the fireplace alone is utilized, the air willbe heated in the two preheating zones and will be distributed to thevarious rooms by the blower 40. Also, if there is no fire in thefireplace 11, the air nevertheless will be heated in the heater 46 ifthermostatic switch 94 is closed.

It will be obvious to those skilled in the art that many variations maybe made in the embodiment here chosen for the purpose of illustratingthe present invention without departing from the scope thereof asdefined by the appended claims.

I claim:

1. A heating system comprising a hollow cabinet, a first set ofpartitions dividing said cabinet into a central compartment, and outercompartments, a plate dividing said central compartment into an upperzone and a lower zone, said upper zone constituting a first preheatingzone, a second set of partitions dividing said lower zone into afireplace and a second preheating zone, there being provided an openingin said plate communicating with said fireplace, a stack extending intosaid first preheating zone and terminating therein, means connecting thestack to the opening in said plate, air inlet means for directing airinto said first preheating zone, a blower in one of said outercompartments, a heater in the other of said outer compartments, firstduct means connecting said blower and said second preheating zone,second duct means connecting said second preheating zone and saidheater, and air discharge means for directing air from said heateroutwardly of said cabinet, said blower communicating with said firstpreheating zone for blowing air from said first preheating zone throughsaid first and second duct means through said second preheating zone andsaid heater and into said discharge means.

2. A heating system comprising a hollow cabinet, a first set ofpartitions dividing said cabinet into a central compartment and outercompartments, a plate dividing said central compartment into an upperzone and a lower zone, said upper zone constituting a first preheatingzone, a second set of partitions dividing said lower zone into afireplace and a second preheating zone, said plate being provided withan opening communicating with said fireplace, a flue member surroundingsaid opening and extending into said first preheating zone, a stackextending into said first preheating zone and opening at its lower endinto said flue member, said stack extending outwardly of said cabinet,air inlet means for directing air into said first preheating zone, ablower in one of said outer compartments, a heater in the other of saidouter compartments, first duct means connecting said blower and saidsecond preheating zone, second duct means connecting said secondpreheating zone and said heater, and air discharge means for directingair from said heater outwardly of said cabinet, said blowercommunicating with said first preheating zone for forcing air throughsaid first duct means into said second preheating zone and then forblowing air from said second preheating zone through said second ductmeans and said heater into said discharge means.

3. A heating system comprising a hollow cabinet, a first set ofpartitions dividing said cabinet into a central compartment and outercompartments, a plate dividing said central compartment into an upperzone and a lower zone, said upper zone constituting a first preheatingzone, a second set of partitions dividing said lower zone into afireplace and a second preheating zone, said plate being provided withan opening communicating with said fireplace, a flue member surroundingsaid opening and extending into said first preheating zone, a stackextending into said first preheating zone and opening at its lower endinto said flue member, said stack extending outwardly of said cabinet,air inlet means for directing air into said first preheating zone, theair in said first preheating zone being heated as it passes around theflue member and stack in heat exchange relationship from the heatsupplied by exhaust gases, the air in said second preheating zone beingheated as it comes into contact with the second set of partitionsseparating said fireplace and second preheating zone, a blower in one ofsaid outer compartments, a heater in the other of said outercompartments, first duct means connecting said blower and said secondpreheating zone, second duct means connecting said second preheatingzone and said heater, and air discharge means for directing air fromsaid heater outwardly of said cabinet, said blower communicating withsaid first preheating zone for forcing air through said first duct meansinto said second preheating zone and then for blowing air from saidsecond preheating zone through said second duct means and said heaterinto said discharge means.

4. A heating system comprising a hollow cabinet, a first set ofpartitions dividing said cabinet into a central compartment and outercompartments, a plate dividing said central compartment into an upperzone and a lower zone, said upper zone constituting a first preheatingzone, a second set of partitions dividing said lower zone into afireplace and a second preheating zone, said plate being provided withan opening communicating with said fireplace, a flue member surroundingsaid opening and extending into said first preheating zone, a stackextending into said first preheating zone and opening at its lower endinto said flue member, said stack extending outwardly of said cabinet,air inlet means for directing air into said first preheating zone, afirst set of baflies mounted within said second preheating zone, asecond set of intermediate baflies mounted within said second preheatingzone and being arranged parallel to each other, said second set ofbaflles extending rearwardly and upwardly at an angle with respect tosaid first set of baffles, the air in said first preheating zone beingheated as it passes around the flue member and stack in heat exchangerelationship from the heat supplied by exhaust gases, louver meansassociated with said first and second sets of baflies for deflecting theair across said sets of baffles, the air in said second preheating zonebeing heated as it comes into contact with the second set of partitionsseparating said fireplace and second preheating zone, a blower in one ofsaid outer compartments, a heater in the other of said outer com- Ipartments, first duct means connecting said blower and said secondpreheating zone, second duct means connecting said second preheatingzone and said heater, and air discharge means for directing air fromsaid heater outwardly of said cabinet, said blower communicating withsaid first preheating zone for forcing air through said first duct meansinto said second preheating zone and then for blowing air from saidsecond preheating zone through said second duct means and said heaterinto said discharge means.

5. A heating system comprising a hollow cabinet, a first set ofpartitions dividing said cabinet into a central compartment and outercompartments, a plate dividing said central compartment into an upperzone and a lower zone, said upper zone constituting a first preheatingzone, a second set of partitions dividing said lower zone into afireplace and a second preheating zone, said plate being provided withan opening communicating with said fireplace, a flue member surroundingsaid opening and extending into said first preheating zone, a stackextending into said first preheating zone and opening at its lower endinto said flue member, said stack extending outwardly of said cabinet,air inlet means for directing air into said first preheating zone, afirst set of baflies mounted within said second preheating zone, asecond set of intermediate batfles mounted within said second preheatingzone and being arranged parallel to each other, said second set ofbaflies extending rearwardly and upwardly at an angle with respect tosaid first set of baflies, a third set of battles mounted in said secondpreheating zone above said second set of baflies and in parallelrelation therewith, a portion of said third set of baffles beingsubstantially wider than said first or second set of bafiies, louvermeans associated with each of said first, second, and third sets ofbattles for deflecting the air across said baflies, the air in saidfirst preheating zone being heated as it passes around the flue memberand stack in heat exchange relationship from the heat supplied byexhaust gases, the air in said second preheating zone being heated as itcomes into contact with the second set of partitions separating saidfireplace and second preheating zone, a blower in one of said outercompartments, a heater in the other of said outer compartments, firstduct means connecting said blower and said second preheating zone,second duct means connecting said second preheating zone and saidheater, and air discharge means for directing air from said heateroutwardly of said cabinet, said blower communicating with said firstpreheating zone for forcing air through said first duct means into saidsecond preheating zone and then for blowing air from said secondpreheating zone through said second duct means and said heater into saiddischarge means.

6. A heating system comprising a hollow cabinet, a first set ofpartitions dividing said cabinet into a central compartm'ent and outercompartments, a plate dividing said central compartment into an upperzone and a lower zone, said upper zone constituting a first preheatingzone, a second set of partitions dividing said lower zone into afireplace and a second preheating zone, said plate being provided withan opening communicating with said fireplace, a flue member surroundingsaid opening and extending into said first preheating zone, a stackextending into said first preheating zone and opening at its lower endinto said flue member, said stack extending outwardly of said cabinet,air inlet means for directing air into said first preheating zone, afirst set of baffles mounted within said second preheating zone, asecond set of intermediate baflies mounted within said second preheatingzone and being arranged parallel to each other, said second set ofbaflles extending rearwardly and upwardly at an angle with respect tosaid first set of baflies, a third set of baffles mounted in said secondpreheating zone above said intermediate bafiles and in parallel relationtherewith, a portion of said third set of baifles being substantiallywider than said first or second set of bafiies, each of said baffiesbeing provided with a plurality of spaced openings, louver means mountedon each of said baffles, adjacent said spaced openings, the air in saidfirst preheating zone being heated as it passes around the,

flue member and stack in heat exchange relationship from the heatsupplied by exhaust gases, the air in said second preheating zone beingheated as it comes into contact with the second set of partitionsseparating said fireplace and second preheating zone, a blower in one ofsaid outer compartments, a heater in the other of said outercompartments, first duct means connecting said blower and said secondpreheating zone, second duct means connecting said second preheatingzone and said heater, and air discharge means for directing air fromsaid heater outwardly of said cabinet, said blower communicating withsaid first preheating zone for forcing air through said first duct meansinto said second preheating zone and then for blowing air from saidsecond preheating zone through said second duct means and said heaterinto said discharge means.

7. A heating system comprising a hollow cabinet, a first set ofpartitions dividing said cabinet into a central compartment and outercompartments, a plate dividing said central compartment into an upperzone and a lower zone, said upper zone constituting a first preheatingzone, a second set of partitions dividing said lower zone into afireplace and a second preheating zone, said plate being provided withan opening communicating with said fireplace, a flue member surroundingsaid opening and extending into said first preheating zone, a stackextending into said first preheating zone and opening at its lower endinto said flue member, said stack extending outwardly of said cabinet,air inlet means for directing air into said first preheating zone, theair in said first preheating zone being heated as it passes around theflue member and stack in heat exchange relationship from the heatsupplied by exhaust gases, the air in said second preheating zone beingheated as it comes into contact with the second set of partitionsseparating said fireplace and second preheating zone, a blower in one ofsaid outer comaprtments, a heater in the other of said outercompartments, first duct means connecting said blower and said secondpreheating zone, second duct means connecting said second preheatingzone and said heater, air discharge means for directing air from saidheater outwardly of said cabinet, said blower communicating with saidfirst preheating zone for forcing air through said first duct means intosaid second preheating zone and then for blowing air from said secondpreheating zone through said second duct means and said heater into saiddischarge means, and alternate air inlet means mounted within the outercompartment containing the heater for drawing air into said heater andbypassing said first and second preheating zones.

8. A heating system comprising a hollow cabinet, a first set ofpartitions dividing said cabinet into a central compartment and outercompartments, a plate dividing said central compartment into an upperzone and a lower zone, said upper zone constituting a first preheatingzone, a second set of partitions dividing said lower zone into afireplace and a second preheating zone, said plate being provided withan opening communicating with said fireplace, a flue member surroundingsaid opening and extending into said first preheating zone, a stackextending into said first preheating zone and opening at its lower endinto said flue member, said stack extending outwardly of said cabinet,air inlet means for directing air into said first preheating zone, theair in said first preheating zone being heated as it passes around theflue member and stack in heat exchange relationship from the heatsupplied by exhaust gases, the air in said second preheating zone beingheated as it comes into contact with the second set of partitionsseparating said fire place and second preheating zone, a blower in oneof said outer compartments, a heater in the other of said outercompartments, fuel supply means operatively associated with said heaterfor delivery of fuel to said heater, first duct means connecting saidblower and said second preheating zone, second duct means connectingsaid second preheating zone and said heater, air discharge means fordirecting air from said heater outwardly of said cabinet, said blowercommunicating with said first preheating zone for forcing air throughsaid first duct means into said secondpreheating zone and then forblowing air from said second preheating zone through said second ductmeans and said heater into said discharge means, and electrical controlmeans operatively connected to the heater, fuel supply means and blowerfor actuating the blower in pretimed relationship to the operation ofthe heater, said electrical control means being adapted to cause thefuel supply means to deliver fuel to the heater in timed relation to theactuation of the blower so that the air forced by said blower can beheated by the then actuated heater.

9. The heating system of claim 3, wherein the second preheating zone isprovided with a battle means mounted therein for defining a plurality ofhorizontally disposed passageways.

10. In a heating system including a hollow cabinet having a plurality ofwalls, a plurality of partitions spaced extending between said wallsinternally of said cabinet defining a fireplace and a preheating zonedisposed adjacent to said fireplace, a first set of bafiles extendingbetween said partitions in said preheating zone for defining a pluralityof horizontally disposed passageways in said preheating zone, a secondset of intermediate baflles extending between said partitions, saidintermediate bafiles being arranged parallel to each other and extendingangu larly upwardly with respect to said first set of bafiles, louvermeans associated with said first and second sets of baffies fordeflecting the air across said sets of baffles, means for directing airthrough said passageways, said means including a blower mounted on oneside of said fireplace and within said cabinet, a heater on the otherside of said fireplace and within said cabinet, and means for directingair from said passageways through said heater and externally of saidcabinet.

11. In a heating system including a hollow cabinet having a plurality ofwalls, a plurality of partitions spaced extending between said wallsinternally of said cabinet defining a fireplace and a preheating zonedisposed adjacent to said fireplace, a first set of baffies extendingbetween said partitions in said preheating zone for defining a pluralityof horizontally disposed passageways in said preheating zone, a secondset of intermediate bafi les extending between said partitions, saidintermediate baflles being arranged parallel to each other and extendingangularly upwardly with respect to said first set of batfies, a thirdset of bafiles mounted above said intermediate 10 bafiles in parallelrelationship therewith, a portion of said third set of baffles beingsubstantially wider than said first or second set of baffles, louvermeans associated with each of said first, second, and third sets ofbafiies for deflecting the air across said sets of battles, and meansfor directing air through said passageways.

12. In a heating system including a hollow cabinet having a plurality ofWalls, a plurality of spaced partitions extending between said wallsinternally of said cabinet defining a fireplace and a preheating zonedisposed adjacent to said fireplace, a first set of baffles extendingbetween said partitions in said preheating zone for defining a pluralityof horizontally disposed passageways in said preheating zone, a secondset of intermediate baflles extending between said partitions, saidintermediate baffles being arranged parallel to each other and extendingangularly upwardly with respect to said first baffles, a third set ofbafiles mounted above said intermediate baffies in parallel relationshiptherewith, a portion of said third set of baffies being substantiallywider than said first or second set of baflles, each of said bafiiesbeing provided with a plurality of spaced openings, louver means mountedon each of said bafiles adjacent said spaced openings, and means fordirecting air through said passageways.

References Cited in the file of this patent UNITED STATES PATENTS361,727 Smith Apr. 26, 1887 1,056,373 Segelken Mar. 18, 1913 1,496,509Abell et al. June 3, 1924 1,583,374 Uhrstrom May 4, 1926 1,588,587 KlausJune 15, 1926 1,699,241 Johnson Jan. 15, 1929 2,158,041 Covert May 9,1939 2,471,351 Russell May 24, 1949 2,525,400 Crawford Oct. 10, 19502,703,566 Pogel et a1 Mar. 8, 1955 FOREIGN PATENTS 532,680 Great BritainJan. 29, 1941 819,152 Great Britain Aug. 26, 1959 335,557 SwitzerlandFeb. 28, 1959

1. A HEATING SYSTEM COMPRISING A HOLLOW CABINET, A FIRST SET OFPARTITIONS DIVIDING SAID CABINET INTO A CENTRAL COMPARTMENT, AND OUTERCOMPARTMENTS, A PLATE DIVIDING SAID CENTRAL COMPARTMENT INTO AN UPPERZONE AND A LOWER ZONE, SAID UPPER ZONE CONSTITUTING A FIRST PREHEATINGZONE, A SECOND SET OF PARTITIONS DIVIDING SAID LOWER ZONE INTO AFIREPLACE AND A SECOND PREHEATING ZONE, THERE BEING PROVIDED AN OPENINGIN SAID PLATE COMMUNICATING WITH SAID FIREPLACE, A STACK EXTENDING INTOSAID FIRST PREHEATING ZONE AND TERMINATING THEREIN, MEANS CONNECTING THESTACK TO THE OPENING IN SAID PLATE, AIR INLET MEANS FOR DIRECTING AIRINTO SAID FIRST PREHEATING ZONE, A BLOWER IN ONE OF SAID OUTERCOMPARTMENTS, A HEATER IN THE OTHER OF SAID OUTER COMPARTMENTS, FIRSTDUCT MEANS CONNECTING SAID BLOWER AND SAID SECOND PREHEATING ZONE,SECOND DUCT MEANS CONNECTING SAID PREHEATING ZONE AND SAID HEATER, ANDAIR DISCHARGE MEANS FOR DIRECTING AIR FROM SAID HEATER OUTWARDLY OF SAIDCABINET, SAID BLOWER COMMUNICATING WITH SAID FIRST PREHEATING ZONE FORBLOWING AIR FROM SAID FIRST